Adjustable armchair



FIG. 1 is a front perspective view of an adjustable armchair showing mydesign;

FIG. 2 is a side perspective view, the opposite side being a mirrorimage thereof;

FIG. 3 is a rear perspective view; and

FIG. 4 is a side perspective view showing the adjustable armchair in analternate position.

The ornamental design for an adjustable armchair, as shown anddescribed.